Commit Graph

31 Commits

Author SHA1 Message Date
s7v7nislands
f4ff4268f7
rpc: fix godoc (#24488)
Co-authored-by: seven <seven@nodereal.io>
2022-03-02 02:51:55 +01:00
Felix Lange
5bcbb2980b
rpc: add PeerInfo (#24255)
This replaces the sketchy and undocumented string context keys for HTTP requests
with a defined interface. Using string keys with context is discouraged because
they may clash with keys created by other packages.

We added these keys to make connection metadata available in the signer, so this
change also updates signer/core to use the new PeerInfo API.
2022-01-20 12:45:07 +01:00
Felix Lange
53b94f135a
rpc: linear time batch response matching (#23856)
This avoids quadratic time complexity in the lookup of the batch element
corresponding to an RPC response. Unfortunately, the new approach
requires additional memory for the mapping from ID to index.

Fixes #22805
2021-11-04 17:44:35 +01:00
chuwt
1e4becb5c1
rpc/client: fix typo (#23834) 2021-11-01 08:14:00 +01:00
Sina Mahmoodi
ca9bce9a45
rpc: set scheme for ws and ipc conns to the server (#23615)
* rpc: set scheme for ws and ipc conns to the server

* rpc: review fixes

* rpc: bugfix

* rpc: empty default scheme
2021-09-21 22:26:35 +02:00
Guillaume Ballet
2e5d141708
rpc: deprecate Client.ShhSubscribe (#22239)
It never worked, whisper uses polling.

Co-authored-by: Felix Lange <fjl@twurst.com>
2021-01-27 10:20:34 +01:00
Alex Prut
c92faee66e
all: simplify nested complexity and if blocks ending with a return statement (#21854)
Changes:

    Simplify nested complexity
    If an if blocks ends with a return statement then remove the else nesting.

Most of the changes has also been reported in golint https://goreportcard.com/report/github.com/ethereum/go-ethereum#golint
2020-11-25 09:24:50 +01:00
rene
290d6bd903
rpc: add SetHeader method to Client (#21392)
Resolves #20163

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-08-03 14:08:42 +02:00
Adam Schmideg
172f7778fe
rpc: add error when call result parameter is not addressable (#20638) 2020-02-11 09:48:58 +01:00
Zhou Zhiyao
44c365c3e2 rpc: reset writeConn when conn is closed on readErr (#20414)
This change makes the client attempt to reconnect when a write fails.
We already had reconnect support, but the reconnect would previously
happen on the next call after an error. Being more eager leads to a
smoother experience overall.
2020-01-27 14:03:15 +01:00
Felix Lange
7c4a4eb58a rpc, p2p/simulations: use github.com/gorilla/websocket (#20289)
* rpc: improve codec abstraction

rpc.ServerCodec is an opaque interface. There was only one way to get a
codec using existing APIs: rpc.NewJSONCodec. This change exports
newCodec (as NewFuncCodec) and NewJSONCodec (as NewCodec). It also makes
all codec methods non-public to avoid showing internals in godoc.

While here, remove codec options in tests because they are not
supported anymore.

* p2p/simulations: use github.com/gorilla/websocket

This package was the last remaining user of golang.org/x/net/websocket.
Migrating to the new library wasn't straightforward because it is no
longer possible to treat WebSocket connections as a net.Conn.

* vendor: delete golang.org/x/net/websocket

* rpc: fix godoc comments and run gofmt
2019-11-18 10:40:59 +02:00
Felix Lange
04e175b8ec rpc: implement websockets with github.com/gorilla/websocket (#19866)
* rpc: implement websockets with github.com/gorilla/websocket

This change makes package rpc use the github.com/gorilla/websocket
package for WebSockets instead of golang.org/x/net/websocket. The new
library is more robust and supports all WebSocket features including
continuation frames.

There are new tests for two issues with the previously-used library:

  - TestWebsocketClientPing checks handling of Ping frames.
  - TestWebsocketLargeCall checks whether the request size limit is
    applied correctly.

* rpc: raise HTTP/WebSocket request size limit to 5MB

* rpc: remove default origin for client connections

The client used to put the local hostname into the Origin header because
the server wanted an origin to accept the connection, but that's silly:
Origin is for browsers/websites. The nobody would whitelist a particular
hostname.

Now that the server doesn't need Origin anymore, don't bother setting
one for clients. Users who need an origin can use DialWebsocket to
create a client with arbitrary origin if needed.

* vendor: put golang.org/x/net/websocket back

* rpc: don't set Origin header for empty (default) origin

* rpc: add HTTP status code to handshake error

This makes it easier to debug failing connections.

* ethstats: use github.com/gorilla/websocket

* rpc: fix lint
2019-07-22 13:22:39 +03:00
Rob Mulholand
98099d6fa7 rpc: fix subscription buffer documentation and test (#19747)
This PR updates a comment about the maximum client subscription buffer
to reflect changes made previously, and fixes a test that wouldn't fail
when wantError == true but execution did not return an error.
2019-06-24 12:43:18 +02:00
Felix Lange
8d815e365c rpc: fix rare deadlock when canceling HTTP call context (#19715)
When cancelling the context for a call on a HTTP-based client while the
call is running, the select in requestOp.wait may hit the <-context.Done()
case instead of the <-op.resp case. This doesn't happen often -- our
cancel test hasn't caught this even though it ran thousands of times
on CI since the RPC client was added.

Fixes #19714
2019-06-20 09:36:27 +03:00
Felix Lange
245f3146c2
rpc: implement full bi-directional communication (#18471)
New APIs added:

    client.RegisterName(namespace, service) // makes service available to server
    client.Notify(ctx, method, args...)     // sends a notification
    ClientFromContext(ctx)                  // to get a client in handler method

This is essentially a rewrite of the server-side code. JSON-RPC
processing code is now the same on both server and client side. Many
minor issues were fixed in the process and there is a new test suite for
JSON-RPC spec compliance (and non-compliance in some cases).

List of behavior changes:

- Method handlers are now called with a per-request context instead of a
  per-connection context. The context is canceled right after the method
  returns.
- Subscription error channels are always closed when the connection
  ends. There is no need to also wait on the Notifier's Closed channel
  to detect whether the subscription has ended.
- Client now omits "params" instead of sending "params": null when there
  are no arguments to a call. The previous behavior was not compliant
  with the spec. The server still accepts "params": null.
- Floating point numbers are allowed as "id". The spec doesn't allow
  them, but we handle request "id" as json.RawMessage and guarantee that
  the same number will be sent back.
- Logging is improved significantly. There is now a message at DEBUG
  level for each RPC call served.
2019-02-04 13:47:34 +01:00
Felix Lange
2e98631c5e
rpc: fix client shutdown hang when Close races with Unsubscribe (#17894)
Fixes #17837
2018-10-15 10:56:04 +02:00
Gísli Kristjánsson
c9a0b36a5f rpc: reset client write deadline after write (#17549)
This fixes an issue with websocket ping frame handling.
2018-09-03 16:56:30 +02:00
LeoLiao
dbae1dc7b3 rpc: fixed comment grammar issue (#17146) 2018-07-09 11:31:59 +03:00
Elad
1836366ac1 all: library changes for swarm-network-rewrite (#16898)
This commit adds all changes needed for the merge of swarm-network-rewrite.
The changes:

- build: increase linter timeout
- contracts/ens: export ensNode
- log: add Output method and enable fractional seconds in format
- metrics: relax test timeout
- p2p: reduced some log levels, updates to simulation packages
- rpc: increased maxClientSubscriptionBuffer to 20000
2018-06-14 11:21:17 +02:00
Felix Lange
52b046c9b6
rpc: clean up IPC handler (#16524)
This avoids logging accept errors on shutdown and removes
a bit of duplication. It also fixes some goimports lint warnings.
2018-04-18 12:27:20 +02:00
Martin Holst Swende
ec3db0f56c cmd/clef, signer: initial poc of the standalone signer (#16154)
* signer: introduce external signer command

* cmd/signer, rpc: Implement new signer. Add info about remote user to Context

* signer: refactored request/response, made use of urfave.cli

* cmd/signer: Use common flags

* cmd/signer: methods to validate calldata against abi

* cmd/signer: work on abi parser

* signer: add mutex around UI

* cmd/signer: add json 4byte directory, remove passwords from api

* cmd/signer: minor changes

* cmd/signer: Use ErrRequestDenied, enable lightkdf

* cmd/signer: implement tests

* cmd/signer: made possible for UI to modify tx parameters

* cmd/signer: refactors, removed channels in ui comms, added UI-api via stdin/out

* cmd/signer: Made lowercase json-definitions, added UI-signer test functionality

* cmd/signer: update documentation

* cmd/signer: fix bugs, improve abi detection, abi argument display

* cmd/signer: minor change in json format

* cmd/signer: rework json communication

* cmd/signer: implement mixcase addresses in API, fix json id bug

* cmd/signer: rename fromaccount, update pythonpoc with new json encoding format

* cmd/signer: make use of new abi interface

* signer: documentation

* signer/main: remove redundant  option

* signer: implement audit logging

* signer: create package 'signer', minor changes

* common: add 0x-prefix to mixcaseaddress in json marshalling + validation

* signer, rules, storage: implement rules + ephemeral storage for signer rules

* signer: implement OnApprovedTx, change signing response (API BREAKAGE)

* signer: refactoring + documentation

* signer/rules: implement dispatching to next handler

* signer: docs

* signer/rules: hide json-conversion from users, ensure context is cleaned

* signer: docs

* signer: implement validation rules, change signature of call_info

* signer: fix log flaw with string pointer

* signer: implement custom 4byte databsae that saves submitted signatures

* signer/storage: implement aes-gcm-backed credential storage

* accounts: implement json unmarshalling of url

* signer: fix listresponse, fix gas->uint64

* node: make http/ipc start methods public

* signer: add ipc capability+review concerns

* accounts: correct docstring

* signer: address review concerns

* rpc: go fmt -s

* signer: review concerns+ baptize Clef

* signer,node: move Start-functions to separate file

* signer: formatting
2018-04-16 15:04:32 +03:00
Lewis Marshall
9feec51e2d p2p: add network simulation framework (#14982)
This commit introduces a network simulation framework which
can be used to run simulated networks of devp2p nodes. The
intention is to use this for testing protocols, performing
benchmarks and visualising emergent network behaviour.
2017-09-25 10:08:07 +02:00
Bas van Kervel
b58a501673 whisperv5: integrate whisper and add whisper RPC simulator 2017-06-15 11:53:15 +02:00
Bas van Kervel
37e3f561f1
rpc: support subscriptions under custom namespaces 2017-04-25 11:13:22 +02:00
Felix Lange
c213fd1fd8 all: import "context" instead of "golang.org/x/net/context"
There is no need to depend on the old context package now that the
minimum Go version is 1.7. The move to "context" eliminates our weird
vendoring setup. Some vendored code still uses golang.org/x/net/context
and it is now vendored in the normal way.

This change triggered new vet checks around context.WithTimeout which
didn't fire with golang.org/x/net/context.
2017-03-22 20:49:15 +01:00
Péter Szilágyi
d4fd06c3dc
all: blidly swap out glog to our log15, logs need rework 2017-02-23 12:16:44 +02:00
Felix Lange
a2b4abd89a rpc: send nil on subscription Err channel when Client is closed
This change makes client subscriptions compatible with the new
Subscription semantics introduced in the previous commit.
2017-01-25 18:44:21 +01:00
Felix Lange
e32925397b rpc: add context argument to EthSubscribe
It's inconsistent not to pass it and most callers will
work with contexts anyway.
2016-08-05 20:48:33 +02:00
Felix Lange
f5f042ffdc rpc: ensure client doesn't block for slow subscribers
I initially made the client block if the 100-element buffer was
exceeded. It turns out that this is inconvenient for simple uses of the
client which subscribe and perform calls on the same goroutine, e.g.

    client, _ := rpc.Dial(...)
    ch := make(chan int) // note: no buffer
    sub, _ := client.EthSubscribe(ch, "something")
    for event := range ch {
        client.Call(...)
    }

This innocent looking code will lock up if the server suddenly decides
to send 2000 notifications. In this case, the client's main loop won't
accept the call because it is trying to deliver a notification to ch.

The issue is kind of hard to explain in the docs and few people will
actually read them. Buffering is the simple option and works with close
to no overhead for subscribers that always listen.
2016-08-05 20:48:33 +02:00
Felix Lange
464660651d rpc: don't exceed context deadline while waiting for send lock 2016-08-05 13:27:02 +02:00
Felix Lange
91b7690428 rpc: add new client, use it everywhere
The new client implementation supports concurrent requests,
subscriptions and replaces the various ad hoc RPC clients
throughout go-ethereum.
2016-07-22 23:21:27 +02:00